The fuel cutoff setting isn't in most of the manuals, only the absolute most recent edition. According to the manual you take your idle TPS reading, and add 4 to it, and that's your cutoff value. The default of 25 works for most vehicles without any further changes though.
Thanks for the reply. I figured it out after playing with the SG last night for about an hour. The only thing I hate about the SG so far is that the horse power reading is wrong. You can't tell me when I am idling that the engine is only producing .9 horse power. Unless I have it improperly installed or misunderstand this gauge, I think it is useless.
An idling engine is producing nothing, just sitting there wasting energy.
13% of the fuel consumed by vehicles in the US is wasted idling.
"Idling", the word itself means of no consequence.
Now when you try to identify the cost of idling, it can get very complicated.
Power Steering Pump
Sucking air through a restriction
Trying to produce power while only utilizing about 25% of atmospheric pressure
Oil pump drive losses
Friction of moving parts, including viscosity friction
The physical act of accelerating each reciprocating part from 0 speed at TDC to max speed at 90 degrees ATDC, then decelerating those same reciprocating parts to 0 speed again at BDC, only to reaccelerate them again to 270 degrees then stopping again at TDC. Two times this whole cycle for a single combustion pulse of 180 degrees out of 720 total degrees.
The physics calculations necessary to calculate the percentage of force attributable to reciprocation versus the part attributable to rotation, of the connecting rod, is so complicated even the most powerful computer would have trouble doing the calculations. This transition occurs over the complete mass of the connecting rod, with the most rotation at the bottom and the most reciprocation at the top.
Imagine the difference between coasting in neutral and coasting in gear tp understand the total losses in reciprocating engines.
Now imagine the difference if you removed the spark plugs, which would eliminate almost all "pumping losses", if you consider pumping losses as the actual moving of the air through the engine.
Now imagine the difference if you removed the cylinder head and all valve train related components, friction, and the corresponding losses. Even in this scenario you would still be losing your inertia moving the reciprocating components up and down in the engine, violating Newtons laws of inertia 8 times for each revolution of each reciprocating assembly.
I am actually surprized it only takes .9 horsepower to keep an engine "idling". Thats the equivilant work it would take to raise over 475 pounds of weight 1 foot every second, or 60 feet per minute.